1551 | Idle and Torne catchment management plan : first annual review November 1996 - July 1998 |
1552 | Urban Waste Water Treatment Directive monitoring of designated and candidate sensitive areas (eutrophic) : macrophyte survey results 1995 |
1553 | Herbarium Image: Potamogeton gramineus |
1554 | Chlamydomonas, |
1555 | Upper Thames catchment management plan : action plan : August 1995 |
1556 | River Valency and Crackington Streams catchment river water quality classification 1991 |
1557 | Herbarium Image: Spirodela polyrhiza |
1558 | Report on the management of the drainage regime within Exminster Marshes |
1559 | Identification of Blue Green Algae of the British Isles Guide to the Genera and Use of the Interactive CD-ROM for Identification of Species |
1560 | Anabaena, |
1561 | Herbarium Image: Potamogeton x nitens |
1562 | Diagnostic Drawing: Stromatolites, |
1563 | Factors affecting salmon in the sea |
1564 | Larva of non-biting midge |
1565 | Herbarium Image: Fumaria sp. |
1566 | A green consultation plan for Dorset : a summary of the Frome and Piddle and Poole Harbour and Purbeck Local Environment Agency Plan |
1567 | Background soil mineral nitrogen contents: OPTI-N, East Yorkshire, 2005 |
1568 | Mougeotia, |
1569 | Herbarium Image: Ranunculus peltatus |
1570 | Nassula, |
1571 | Cyanophyte, |
1572 | Hydrurus, |
1573 | Resting spore |
1574 | Green algae, |
1575 | Flow protection criteria for adult salmon - phase 3 case studies |